1,2,4,7,11,()2,5,10,17,26,()

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1,2,4,7,11,()2,5,10,17,26,()1,2,4,7,11,()2,5,10,17,26,()1,2,4,7,11,()2,5,10,17,26,()163716依次加1,2,3,4

1,2,4,7,11,()2,5,10,17,26,()
1,2,4,7,11,()
2,5,10,17,26,()

1,2,4,7,11,()2,5,10,17,26,()
16
37

16 依次加1,2,3,4,5
37 依次加3,5,7,9,11

1,2,4,7,11,16,
2,5,10,17,26,37

16 2-1=1,4-2=2,7-4=3 依次类推得16
37 同理

.........

依次加1,2,3,4,5 每次多1.答案:(16)
依次加3,5,7,9,11 每次多2.答案:(37)

A:
a(n+1)=a(n)+n-1 (n>=1)
a(1)=1
B:
a(n+1)=a(n)+2n-1 (n>=1)
a(1)=2

16,37

16.1+1=2,2+2=4,4+3=7,7+4=11,(11+5=16),(+1+2+3+4+5).
37.2+3=5,5+5=10,10+7=17,17+9=26,(26+11=37)