A102069 - OEIS

%I #11 Jan 07 2024 17:40:46

%S 2,6,12,20,30,42,56,72,9,11,231,651,1271,2091,3111,4331,5751,7371,182,

%T 24,264,704,1344,2184,3224,4464,5904,7544,276,39,299,759,1419,2279,

%U 3339,4599,6059,7719,372,56,336,816,1496,2376,3456,4736,6216,7896,470,75,375

%N Analogous to the oblong (promic or heteromecic) sequence formed but with reversal digits of factors multiplied.

%F a(n) = R(n)*R(n+1), where R(n) is the digital reversal of n.

%t r[n_]:=FromDigits[Reverse[IntegerDigits[n]]];Table[r[n]*r[n+1],{n,51}] (* _James C. McMahon_, Jan 07 2024 *)

%Y Cf. A001129, A002378.

%K easy,nonn,base,less

%O 1,1

%A _Michael Joseph Halm_, Feb 12 2005