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A022780 Place where n-th 1 occurs in A023118. 3
1, 2, 3, 5, 7, 10, 13, 17, 21, 26, 31, 36, 42, 48, 55, 62, 70, 78, 87, 96, 105, 115, 125, 136, 147, 159, 171, 184, 197, 210, 224, 238, 253, 268, 284, 300, 317, 334, 351, 369, 387, 406, 425, 445, 465, 486, 507, 529, 551, 573, 596, 619, 643, 667, 692 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = n + 1 + Sum{floor[(n - k)/sqrt(5)], k = 0..n}.

MATHEMATICA

Table[n + 1 + Sum[Floor[(n - k)/Sqrt[5]], {k, 0, n}], {n, 0, 200}] (* A022780 *)

(* Clark Kimberling, Mar 14 2015 *)

CROSSREFS

Cf. A022776, A022778, A255977.

Sequence in context: A090499 A229170 A022335 * A075353 A132278 A025700

Adjacent sequences:  A022777 A022778 A022779 * A022781 A022782 A022783

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 1 10:33 EDT 2020. Contains 333159 sequences. (Running on oeis4.)