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A096072
Numbers whose position is not changed by the rearrangement defined by A096070; or k such that A096070(k) = k.
1
1, 2, 3, 7, 9, 14, 19, 21, 24, 26, 30, 34, 40, 42, 48, 51, 122, 128, 174, 207, 211, 247, 264, 296, 300, 310, 354, 368, 408, 438, 448, 454, 464, 490, 494, 520, 538, 728, 746, 798, 828, 866, 1008, 1010, 1026, 1076, 1188, 1198, 1262, 1370, 1376, 1403, 1474, 1542
OFFSET
1,2
MATHEMATICA
Module[{n, m = 1550, s = 0, v = {}}, Reap[For[n = 1, n <= m, n++, k = 1; While[MemberQ[v, k] || PrimeQ[s + k] != EvenQ[n], k++]; If[n == k, Sow[k]]; s = s + k; v = Union[v, {k}]]][[2, 1]]] (* Jean-François Alcover, Nov 03 2020, after PARI *)
PROG
(PARI) {m=1550; s=0; v=Set([]); for(n=1, m, k=1; while(setsearch(v, k)>0||isprime(s+k)!=(n%2==0), k++); if(n==k, print1(k, ", ")); s=s+k; v=setunion(v, Set(k)))}
CROSSREFS
Cf. A096070.
Sequence in context: A092293 A215485 A320275 * A305121 A014837 A019312
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Jun 20 2004
EXTENSIONS
Edited, corrected and extended by Klaus Brockhaus, Jun 21 2004
STATUS
approved