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 A221979 Partial sums of primes of the form (n+1)^7 - n^7. 2
 127, 14324, 557931, 1831540, 4517357, 9734388, 26079025, 167982242, 2096276793, 10354981402, 24379848623, 47195272710, 78109546591, 169264277168, 285424955019, 468934979410, 749602296677, 1302535107108, 2819580695167, 4457920826414 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Partial sums of primes equal to the difference of two consecutive seventh powers (x+1)^7 - x^7 = 7x(x+1)(x^2+x+1)^2+1 (A121618). Values of x = A121619 - 1. Number of primes equal (x+1)^7 - x^7 < 10^(n) in A221977. Partial sums of number of primes of the form (x+1)^7 - x^7 have similar characteristics to similar sequences for natural primes (A007504), cuban primes (A221793) and primes of the form (x+1)^5 - x^5 (A221848). LINKS Vladimir Pletser, Table of n, a(n) for n = 1..1000 CROSSREFS Sequence in context: A121618 A069382 A319366 * A058322 A252483 A138128 Adjacent sequences: A221976 A221977 A221978 * A221980 A221981 A221982 KEYWORD nonn,easy AUTHOR Vladimir Pletser, Feb 02 2013 STATUS approved

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Last modified March 2 05:08 EST 2024. Contains 370460 sequences. (Running on oeis4.)