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A127390 Sum of all n-digit highly composite numbers. 3
13, 180, 2460, 18060, 332640, 3548160, 37837800, 311351040, 3455131680, 32639967360, 479785466160, 3379449593520, 44734582292400, 527257688958000, 3493634344200000, 31840983413038800, 408373247583100800 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

Robert G. Wilson v, Table of n, a(n) for n = 0..76.

Graeme McRae, Highly Composite Numbers

S. Ramanujan, Highly Composite Numbers.

EXAMPLE

If n=1 then the sum of the highly composite numbers 1+2+4+6 = 13 which is the first term in the sequence.

If n=2 then the sum of the highly composite numbers 12+24+36+48+60 = 180 which is the second term in the sequence.

CROSSREFS

Cf. A002182.

Sequence in context: A197198 A196956 A132386 * A142646 A201607 A083576

Adjacent sequences:  A127387 A127388 A127389 * A127391 A127392 A127393

KEYWORD

nonn,base

AUTHOR

Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Mar 30 2007

EXTENSIONS

More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Apr 08 2007

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Last modified February 17 14:50 EST 2012. Contains 206050 sequences.