A053997 Sum of primes in n-th shell of prime spiral.

2, 98, 960, 3828, 10228, 21772, 40248, 67390, 105222, 156300, 221246, 304392, 404404, 528100, 672456, 844334, 1044690, 1270896, 1531834, 1833912, 2163068, 2537074, 2949726, 3412394, 3922832, 4470566, 5074544, 5742778, 6460670

Offset

0,1

References

G. L. Honaker, Jr., idea in 1998 email correspondence.

Mike Keith, "Letter Spirals," Word Ways (33,1), Feb 15 2000. Pages 3-7.

Links

Table of n, a(n) for n=0..28.

Crossrefs

Cf. A053823.

Sequence in context: A316278 A305957 A317218 * A305688 A317068 A316949

Adjacent sequences: A053994 A053995 A053996 * A053998 A053999 A054000

Keyword

easy,nonn

Author

Enoch Haga, Apr 06 2000

Status

approved