A126794 a(1)=1. a(n+1) = a(n) + a(floor(sqrt(n))).

1, 2, 3, 4, 6, 8, 10, 12, 14, 17, 20, 23, 26, 29, 32, 35, 39, 43, 47, 51, 55, 59, 63, 67, 71, 77, 83, 89, 95, 101, 107, 113, 119, 125, 131, 137, 145, 153, 161, 169, 177, 185, 193, 201, 209, 217, 225, 233, 241, 251, 261, 271, 281, 291, 301, 311, 321, 331, 341, 351

Offset

1,2

Links

Table of n, a(n) for n=1..60.

Example

a(26) = a(25) + a(floor(sqrt(25))) = 71 + a(5) = 71 + 6 = 77.

Maple

a[1]:=1: for n from 1 to 75 do a[n+1]:=a[n]+a[floor(sqrt(n))] od: seq(a[n], n=1..75); # Emeric Deutsch, Feb 24 2007

Crossrefs

Sequence in context: A056865 A097602 A347625 * A011862 A122957 A078769

Adjacent sequences: A126791 A126792 A126793 * A126795 A126796 A126797

Keyword

nonn

Author

Leroy Quet, Feb 20 2007

Extensions

More terms from Emeric Deutsch, Feb 24 2007

Status

approved