A230286 a(n) = A016052(n)/3.

1, 2, 4, 5, 7, 8, 10, 11, 13, 17, 19, 23, 28, 32, 37, 38, 40, 41, 43, 47, 49, 53, 58, 62, 67, 68, 70, 71, 73, 77, 79, 83, 88, 92, 97, 101, 103, 107, 109, 113, 118, 122, 127, 131, 136, 140, 142, 146, 151, 155, 160, 164

Offset

1,2

Comments

a(1) = 1; for n >= 1, a(n+1) = a(n) + sum of its digits.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Index entries for Colombian or self numbers and related sequences

Prog

(Haskell)
a230286 = (flip div 3) . a016052

Crossrefs

Cf. A004207, A016052, A230287 (first differences).

Sequence in context: A175302 A288521 A067940 * A336236 A215099 A022768

Adjacent sequences: A230283 A230284 A230285 * A230287 A230288 A230289

Keyword

nonn,base

Author

Reinhard Zumkeller and N. J. A. Sloane, Oct 16 2013

Status

approved