Friedman numbers n such that n+1 is also a Friedman number.

Terms

a(0) =125a(1) =126a(2) =127a(3) =2500a(4) =2501a(5) =2502a(6) =2503a(7) =2504a(8) =2505a(9) =2506a(10) =2507a(11) =2508a(12) =6144a(13) =11663a(14) =11664a(15) =12100a(16) =12101a(17) =12102a(18) =12103a(19) =12104a(20) =12105a(21) =12106a(22) =12107a(23) =12108a(24) =12768a(25) =13822a(26) =13823a(27) =13824a(28) =13825a(29) =15378