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A123238
A polynomial of degree 130.
0
32, 1425203755583399996168049966590022914305, 106693983773666239196515949681928803974352131646102553502213120, 1854935026981753007730687157925149063119367096762979743090469098299990573383681
OFFSET
1,1
FORMULA
a(n) = 1 + n^8 + n^12 + n^18 + n^20 + n^27 + n^28 + n^30 + n^42 + n^44 + n^45 + n^50 + n^52 + n^63 + n^66 + n^68 + n^70 + n^75 + n^76 + n^78 + n^92 + n^98 + n^99 + n^102 + n^105 + n^110 + n^114 + n^116 + n^117 + n^124 + n^125 + n^130 = + / - (n^2 + 1) * (n^128 - n^126 + n^124 + n^123 - n^121 + n^119 - n^117 + 2n^115 + n^114 - 2n^113 + 2n&111 - 2n^109 + n^108 + 2n^107 - n^106 - 2n^105 + n^104 + 3n^103 - n^102 - 3n^101 + 2n^100 + 3n^99 - 2n^98 - 2n^97 + 3n^96 + 2n^95 - 3n^94 - 2n^93 + 3n^92 + 2n^91 - 2n^90 - 2n^89 + 2n^88 + 2n^87 - 2n^86 - 2n^85 + 2n^84 + 2n^83 - 2n^82 - 2n^81 + 2n^80 + 2n^79 - 2n^78 - 2n^77 + 3n^76 + 2n^75 - 2n^74 - n^73 + 2n^72 + n^71 - 2n^70 - n^69 + 3n^68 + n^67 - 2n^66 - n^65 + 3n^64 + n^63 - 3n^62 + 3n^60 - 3n^58 + 3n^56 - 3n^54 + 3n^52 - 2n^50 + 3n^48 - 3n^46 + 3n^44 + n^43 - 2n^42 - n^41 + 3n^40 + n^39 - 3n^38 - n^37 + 3n^36 + n^35 - 3n^34 - n^33 + 3n^32 + n^31 - 3n^30 - n^29 + 4n^28 + n^27 - 3n^26 + 3n^24 - 3n^22 + 3n^20 - 2n^18 + 3n^16 - 3n^14 + 3n^12 - 2n^10 + 2n^8 - n^6 + n^4 - n^2 + 1).
CROSSREFS
Cf. A014612 (triprimes), A123656-A123665.
Sequence in context: A224087 A224084 A351751 * A372394 A225347 A218116
KEYWORD
easy,nonn,less
AUTHOR
Jonathan Vos Post, Oct 06 2006
STATUS
approved