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A108585 a(n) = a(n-1)+2*A005185(n). 0
2, 6, 12, 18, 26, 36, 46, 58, 70, 82, 98, 114, 130, 150, 168, 188, 210, 232, 256, 280, 304, 328, 360, 388, 416, 448, 480, 512, 544, 584, 618, 652, 692, 734, 772, 812, 856, 898, 942, 988, 1034, 1082, 1130, 1178, 1226, 1274, 1338, 1386, 1436, 1496, 1552, 1604 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Uses A005185 as a prime-like gap sequence.

LINKS

Table of n, a(n) for n=0..51.

MATHEMATICA

Hofstadter[0] = Hofstadter[1] = 1 Hofstadter[n_Integer?Positive] := Hofstadter[n] = Hofstadter[n - Hofstadter[n - 1]] + Hofstadter[n - Hofstadter[n - 2]] a[1] = 2; a[n_] := a[n] = a[n - 1] + 2*Hofstadter[n] c = Table[a[n], {n, 1, 200}]

CROSSREFS

Cf. A005185.

Sequence in context: A162802 A330320 A267461 * A294062 A193764 A278484

Adjacent sequences:  A108582 A108583 A108584 * A108586 A108587 A108588

KEYWORD

nonn

AUTHOR

Roger L. Bagula, Jul 05 2005

STATUS

approved

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Last modified June 18 01:16 EDT 2021. Contains 345098 sequences. (Running on oeis4.)