

A086061


Sum of first n 8almost primes.


0



256, 640, 1216, 1856, 2720, 3616, 4576, 5872, 7216, 8624, 10064, 11664, 13328, 15272, 17288, 19400, 21560, 23736, 25976, 28376, 30808, 33304, 36220, 39164, 42188, 45324, 48492, 51732, 54996, 58356, 61876, 65476, 69124, 72836, 76580
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OFFSET

1,1


COMMENTS

Elements in this sequence can themselves be 8almost primes, as happens often for 5almost primes. a(1) = 256 = 2^8. Also an 8Brilliant number. a(2) = 640 = 2^7 * 5. Also an 8Brilliant number. Does this happen infinitely often?  Jonathan Vos Post, Dec 11 2004


LINKS



EXAMPLE

a(2)=640 because sum of first two 8almost primes i.e. 256+384 is 640.


CROSSREFS



KEYWORD

easy,nonn


AUTHOR



STATUS

approved



