Numbers k such that lambda(k) = lambda(k+1).

Terms

a(0) =1a(1) =3a(2) =15a(3) =90a(4) =104a(5) =495a(6) =665a(7) =702a(8) =740a(9) =836a(10) =975a(11) =1628a(12) =2625a(13) =2834a(14) =2849a(15) =3800a(16) =7384a(17) =12402a(18) =12560a(19) =13050a(20) =15250a(21) =16470a(22) =22935a(23) =25928a(24) =26274a(25) =29574a(26) =29890a(27) =32864a(28) =39524a(29) =41451