# This b-file was computed by Antti Karttunen, 2020-02-12 # in GP/PARI CALCULATOR Version 2.9.4 (released) amd64 running linux (x86-64/GMP-6.1.2 kernel) 64-bit version, compiled: Dec 19 2017, gcc version 7.3.0 (Ubuntu 7.3.0-1ubuntu1), threading engine: pthread # with the following program: # # default(parisizemax,2^31); # A005940(n) = { my(p=2, t=1); n--; until(!n\=2, if((n%2), (t*=p), p=nextprime(p+1))); t }; \\ From A005940 # A156552(n) = {my(f = factor(n), p2 = 1, res = 0); for(i = 1, #f~, p = 1 << (primepi(f[i, 1]) - 1); res += (p * p2 * (2^(f[i, 2]) - 1)); p2 <<= f[i, 2]); res}; \\ From A156552 by _David A. Corneth_ # A332222(n) = A156552(sigma(A005940(1+n))); # for(n=0,479,write("b332222.txt", n, " ", A332222(n))); 0 0 1 2 2 3 3 8 4 5 5 11 6 32 7 10 8 7 9 13 10 23 11 35 12 1024 13 66 14 39 15 1024 16 11 17 23 18 31 19 37 20 47 21 55 22 133 23 43 24 258 25 2050 26 4099 27 72 28 267 29 87 30 48 31 38 32 17 33 27 34 47 35 71 36 55 37 95 38 263 39 45 40 95 41 111 42 191 43 151 44 8199 45 269 46 175 47 4099 48 264 49 518 50 1035 51 2056 52 1037 53 8203 54 2080 55 138 56 207 57 539 58 1071 59 167 60 1048592 61 98 62 291 63 1073741824 64 13 65 37 66 71 67 75 68 75 69 111 70 267 71 87 72 143 73 119 74 223 75 287 76 8203 77 535 78 319 79 4101 80 151 81 223 82 383 83 303 84 447 85 447 86 1071 87 183 88 2075 89 16407 90 32799 91 293 92 2143 93 367 94 197 95 155 96 262146 97 530 98 1059 99 530 100 1061 101 2075 102 578 103 4106 104 2119 105 2077 106 4151 107 8227 108 4354 109 4162 110 16423 111 2080 112 2097175 113 431 114 831 115 587 116 863 117 2159 118 779 119 215 120 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