A219961 First differences of A219960.

314, 11, 335, 110, 162, 25, 94, 47, 119, 21, 98, 377, 46, 97, 1, 151, 133, 97, 23, 194, 23, 53, 255, 5, 2, 24, 27, 21, 228, 238, 18, 47, 40, 64, 22, 48, 12, 56, 107, 22, 12, 86, 68, 89, 26, 200, 39, 30, 2, 95, 14, 21, 189, 21, 59, 19, 27, 63, 7, 44, 98, 40

Offset

1,1

Comments

Conjecture: 1 appears infinitely often in this sequence (indicating an infinite number of pairs of consecutive integers in the parent sequence), despite very few appearances compared with A219552, which is derived from a very similar process.

Links

Carl R. White, Table of n, a(n) for n = 1..10000

Mathematica

f[n_] := Ceiling[Sqrt[n]]*(Ceiling[Sqrt[n]]^2 - n); t = Select[Range[10000], NestWhileList[f, #, UnsameQ, All][[-1]] > 0 &]; Differences[t] (* T. D. Noe, Dec 04 2012 *)

Crossrefs

Cf. A219960, A219552, A219962

Sequence in context: A068650 A106156 A286289 * A107116 A107115 A045290

Adjacent sequences: A219958 A219959 A219960 * A219962 A219963 A219964

Keyword

nonn

Author

Carl R. White, Dec 02 2012

Status

approved