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A092406 a(n)=sigma(n) if sigma(n)>=a(n-1), else a(n)=a(n-1)+sigma(n). 0
1, 3, 4, 7, 13, 25, 33, 48, 61, 79, 91, 119, 133, 157, 181, 212, 230, 269, 289, 331, 363, 399, 423, 483, 514, 556, 596, 652, 682, 754, 786, 849, 897, 951, 999, 1090, 1128, 1188, 1244, 1334, 1376, 1472, 1516, 1600, 1678, 1750, 1798, 1922, 1979, 2072, 2144, 2242 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Does a(n)=sigma(n) only for n=1,2,3,4?

LINKS

Table of n, a(n) for n=1..52.

PROG

(PARI) { v=vector(60); v[1]=sigma(1); for (i=2, 60, if (sigma(i)<v[i-1], v[i]=v[i-1]+sigma(i), v[i]=sigma(i))); v }

CROSSREFS

Cf. A000203.

Sequence in context: A189994 A125118 A116201 * A250297 A254310 A121174

Adjacent sequences:  A092403 A092404 A092405 * A092407 A092408 A092409

KEYWORD

nonn

AUTHOR

Jon Perry, Mar 22 2004

STATUS

approved

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Last modified December 3 01:12 EST 2016. Contains 278694 sequences.