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A083272 a(n) = n.tau[a(n-1)]+1 = n.A000005[a(n-1)]+1, a(0) = 1. 1
1, 2, 5, 7, 9, 16, 31, 15, 33, 37, 21, 45, 73, 27, 57, 61, 33, 69, 73, 39, 81, 106, 89, 47, 49, 76, 157, 55, 113, 59, 61, 63, 193, 67, 69, 141, 145, 149, 77, 157, 81, 206, 169, 130, 353, 91, 185, 189, 385, 393, 201, 205, 209, 213, 217, 221, 225, 514, 233, 119, 241, 123, 249 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..62.

MATHEMATICA

h[x_] := x*DivisorSigma[0, h[x-1]]]+1 Table[h[w], {w, 1, 100}]

CROSSREFS

Cf. A000005, A083271.

Sequence in context: A286162 A286164 A211167 * A115906 A192279 A286356

Adjacent sequences:  A083269 A083270 A083271 * A083273 A083274 A083275

KEYWORD

easy,nonn

AUTHOR

Labos Elemer, May 14 2003

STATUS

approved

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Last modified November 19 22:34 EST 2019. Contains 329323 sequences. (Running on oeis4.)