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A062968 n + 1 - d(n), where d(n) is the number of divisors function. 6
1, 1, 2, 2, 4, 3, 6, 5, 7, 7, 10, 7, 12, 11, 12, 12, 16, 13, 18, 15, 18, 19, 22, 17, 23, 23, 24, 23, 28, 23, 30, 27, 30, 31, 32, 28, 36, 35, 36, 33, 40, 35, 42, 39, 40, 43, 46, 39, 47, 45, 48, 47, 52, 47, 52, 49, 54, 55, 58, 49, 60, 59, 58, 58, 62, 59, 66, 63, 66, 63, 70, 61, 72 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

A062968 = n - A070824 [From Eric Desbiaux, Dec 10 2009]

LINKS

Table of n, a(n) for n=1..73.

FORMULA

a(n) = n+1-A000005(n) = A049820(n)-1. [From Omar E. Pol, Jul 16 2009]

MATHEMATICA

Table[n + 1 - DivisorSigma[0, n], {n, 1, 73}] (* Jean-Fran├žois Alcover, Jun 24 2013 *)

PROG

(PARI) j=[]; for(n=1, 150, j=concat(j, numdiv(n)-n-1)); j

CROSSREFS

Cf. A062969.

Cf. A000005, A049820. [From Omar E. Pol, Jul 16 2009]

Sequence in context: A304214 A060367 A267451 * A239966 A304406 A053197

Adjacent sequences:  A062965 A062966 A062967 * A062969 A062970 A062971

KEYWORD

nonn

AUTHOR

Jason Earls, Jul 23 2001

STATUS

approved

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Last modified January 27 12:01 EST 2020. Contains 331295 sequences. (Running on oeis4.)