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A082460 a(n) = pi[n] - a(n - 1) = A000720[n] - a(n - 1). 0
0, 1, 1, 1, 2, 1, 3, 1, 3, 1, 4, 1, 5, 1, 5, 1, 6, 1, 7, 1, 7, 1, 8, 1, 8, 1, 8, 1, 9, 1, 10, 1, 10, 1, 10, 1, 11, 1, 11, 1, 12, 1, 13, 1, 13, 1, 14, 1, 14, 1, 14, 1, 15, 1, 15, 1, 15, 1, 16, 1, 17, 1, 17, 1, 17, 1, 18, 1, 18, 1, 19, 1, 20, 1, 20, 1, 20, 1, 21, 1, 21, 1, 22, 1, 22, 1, 22, 1, 23, 1 (list; graph; refs; listen; history; internal format)
OFFSET

0,5

MAPLE

f[x_] := PrimePi[x]-f[x-1] f[0]=0; Table[f[w], {w, 1, 128}]

CROSSREFS

Cf. A000720.

Sequence in context: A049994 A135732 A084360 * A029227 A029214 A134460

Adjacent sequences:  A082457 A082458 A082459 * A082461 A082462 A082463

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Apr 26 2003

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.