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A180220 Partial sums of larger of amicable pair. 0
284, 1494, 4418, 9982, 16350, 27206, 41801, 60217, 136301, 203293, 274438, 362071, 450801, 574956, 714771, 837923, 991099, 1159829, 1336165, 1517013, 1720445, 1922889, 2287973, 2677897, 3108299, 3507891, 3963235, 4449413, 4964149, 5490064, 6159752 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The subsequence of primes begins a(6) = 41801, a(7) = 60217, a(9) = 203293, a(15) = 837923, a(23) = 2287973, a(28) = 4449413.

LINKS

Table of n, a(n) for n=1..31.

FORMULA

a(n) = sum[i=1..n] A002046(n).

EXAMPLE

a(13) = 284 + 1210 + 2924 + 5564 + 6368 + 10856 + 14595 + 18416 + 76084 + 66992 + 71145 + 87633 + 88730 = 450801 = 3^2 * 13 * 3853.

CROSSREFS

Cf. AA002025, A063990, A066873, A180219 Partial sums of smaller of amicable pair.

Sequence in context: A260087 A002046 A143191 * A108110 A218400 A196893

Adjacent sequences:  A180217 A180218 A180219 * A180221 A180222 A180223

KEYWORD

less,nonn

AUTHOR

Jonathan Vos Post, Aug 16 2010

EXTENSIONS

a(3) inserted by R. J. Mathar, Aug 29 2010)

STATUS

approved

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Last modified November 13 10:29 EST 2019. Contains 329093 sequences. (Running on oeis4.)